xip.h

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/*
 *  linux/fs/ext2/xip.h
 *
 * Copyright (C) 2005 IBM Corporation
 * Author: Carsten Otte ([email protected])
 */

#ifdef CONFIG_EXT2_FS_XIP
extern void ext2_xip_verify_sb (struct super_block *);
extern int ext2_clear_xip_target (struct inode *, sector_t);

static inline int ext2_use_xip (struct super_block *sb)
{
    struct ext2_sb_info *sbi = EXT2_SB(sb);
    return (sbi->s_mount_opt & EXT2_MOUNT_XIP);
}
int ext2_get_xip_mem(struct address_space *, pgoff_t, int,
                void **, unsigned long *);
#define mapping_is_xip(map) unlikely(map->a_ops->get_xip_mem)
#else
#define mapping_is_xip(map)         0
#define ext2_xip_verify_sb(sb)          do { } while (0)
#define ext2_use_xip(sb)            0
#define ext2_clear_xip_target(inode, chain) 0
#define ext2_get_xip_mem            NULL
#endif